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Q u a n tita tiv e F a c to rs .E th y l Study 1929-
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Milligrams of l
GROUP
MEAN
Tank Wagon Ethyl 101-150
.100
Garage Mechanics, Exposure 301-501
.094
Filling Station, Ethyl 1-56
.079
Barrel Fillers, Plain 201-227
.058
Barrel Fillers, Ethyl 251-272
.052
GROUP
Tank Wagon, Ethyl 101-150
Barrel Fillers, Plain 201-227
Garage Mechanics, Exposure 301-501
Barrel Fillers, Ethyl 251-272
Filling Station, Ethyl 1-56
Milligrams of - in
MEAN
P
.170
.
.137
.
.131
.
.113
.
.097
.
KJ 0019090
GROUP
Barrel Fillers, Plain 201-227
Garage Mechanics, Exp. 301-501
Tank Wagon Ethyl + 101-149
Barrel Fillers,Ethyl 251-272
Filling Station,Ethyl
Milligrams of l fae
MEAN
P.E.
.137
+.014
.131
+ .005
.119
+ .013
.113
+ .010
.097
+ .010
+ indicates the exclusion of case number
None of the differences between the mean
Pilling Station Ethy Showing lead findings for the
I$27
Mean P.E.mean
S.D, PE. s.d
Lead in faeces,mgrs.
.322
(Total)
+ .039
Lead In faeces, (Mgrs.-grm# ash)
& .146
+ .020
Lead in urine.mgrs. (Total)
Lead in urine (mgrs-liter)
.188 + *016
.122 + .015
.255 + .028
1129 +. 014
.118 +.011
,111 +. 010
Excluding Case#
All values are stable as judged by their re always in favor of 1929,but in three cases while in the remaining instance it is vergi
Tank Wagon Showing lead findings for th
19 2 7
Mean P.E.mean
S.D P.E. s.d
Lead in faeces,mgrs. (Total)
Lead in faeces (Mgrs.-grin. ash.)
Lead in Urine (Total) (
Lead in urine (mgrs,-liter)
.308 + .025
.150 + .07!
.109 + .008
.047 +.005
.171 + .018
, .131 + .013
.147 + .019
.133 +.013
Exclusive of Case#1
All constants are stable as indicated by the in the case of the faeces is in favor of 192 favor of 1929, In no case, however, is the d
Tank Wagon Ethyl plus Pi Showing lead findings for the-same individ
19 2 7
Mean P.E.raean
S.D. P.E. s.d.
HO COO HaOa
+f
Lead in faeces,mgrs* (Total) #
Lead in faeces (Mgrs.-grm ash.)#
Lead in urine (Total) +
Lead in urine (mgrs.-liter) +
,316 +mm.024
.129 + .011
.169 + .03.2
.133 + .012
.212 + .017
a124 + .008
*> .123 +.008
#Excludlng Case 4 for 1927 +Excluding Case 104
All constants are stable as indicated by thei is always in favor of 1929 but except in the statistically significant. The difference men probable ernor and therefore may be looked u
Length of service and lead in urine, mgrs, per Length of exposure to ethyl gasoline and lead
mgrs, per grm* ash Length of exposure to ethyl gasoline and lead i
mgrms. per liter
There is no significant correlation. All coeffi four times their respective probable eroors. Th case of the last coefficient, of itself, has no case of the first two coefficients, they are les probable errors, in spite of the fact that the In the case of the last two.
KS 0019095